package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
       /* FileInputStream fis = new FileInputStream("image.png");
        FileOutputStream fos = new FileOutputStream("image_cp2.png");
        long start = System.currentTimeMillis();
        int len;
        byte[] data = new byte[1024*10];
        while ((len =  fis.read(data))!=-1){
            fos.write(data,0,len);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕！！耗时："+(end-start)+"毫秒");
        System.out.println(end/1000/60/60/365);
        fis.close();
        fos.close();*/
        int a='a'+'b';
        char c=65;
        System.out.println(c);
    }
}
